Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média total para o Men's Open de 7 e a cadeira de rodas masculina mais que 0?
 ###Tabelas: CREATE TABLE new_mexico_counties_ranked_by_per_capita_income (new_mexico_counties_ranked_by_per_capita_income_id AUTO_INCREMENT PRIMARY KEY, County VARCHAR, Per capita income VARCHAR, Median household income VARCHAR, Median family income VARCHAR, Population INT, Number of households INT) CREATE TABLE mixed-doubles_finals:_15_7–8 (mixed-doubles_finals:_15_7–8_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents VARCHAR, Score VARCHAR) CREATE TABLE 2006_ladder (2006_ladder_id AUTO_INCREMENT PRIMARY KEY, Golden Rivers VARCHAR, Wins INT, Byes INT, Losses INT, Draws INT, Against INT) CREATE TABLE rose_bowl:_michigan_49_stanford_0 (rose_bowl:_michigan_49_stanford_0_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Touchdowns INT, Extra points INT, Field goals INT, Points INT) CREATE TABLE victories_by_nationality (victories_by_nationality_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Men's Open INT, Women's Open INT, Men's Wheelchair INT, Women's Wheelchair INT, Total INT)  
SELECT AVG Total FROM victories_by_nationality WHERE Men's Open = 7 AND Men's Wheelchair > 0